A vulnerability (CVE-2026-25679, CVSS 7.5 HIGH) in the `rhc` client for Red Hat Enterprise Linux 9.0 involves incorrect parsing of IPv6 host literals in the `net/url` library. The flaw affects `rhc` versions prior to 0.2.1-13.el9_0, as patched packages for this version are provided in the advisory for multiple architectures under the Update Services for SAP Solutions. Administrators should apply the available update to their affected RHEL 9.0 systems.
Red Hat Product Errata RHSA-2026:8852 - Security Advisory Issued: 2026-04-20 Updated: 2026-04-20 RHSA-2026:8852 - Security Advisory Overview Updated Packages Synopsis Important: rhc security update Type/Severity Security Advisory: Important Red Hat Lightspeed patch analysis Identify and remediate systems affected by this advisory. View affected systems Topic An update for rhc is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. Description rhc is a client tool and daemon that connects the system to Red Hat hosted services enabling system and subscription management. Security Fix(es): net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Solution For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Affected Products Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 ppc64le Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.0 aarch64 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.0 s390x Fixes BZ - 2445356 - CVE-2026-25679 net/url: Incorrect parsing of IPv6 host literals in net/url CVEs CVE-2026-25679 References https://access.redhat.com/security/updates/classification/#important Note: More recent versions of these packages may be available. Click a package name for more details. Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 SRPM rhc-0.2.1-13.el9_0.src.rpm SHA-256: 4fb253caf8dc4c7ce55d7ec79847c98fed405fdce65a600cf9a258105653bfc5 ppc64le rhc-0.2.1-13.el9_0.ppc64le.rpm SHA-256: ee697f2d394fd1851ecb6e4d5867246a13a704bb1d56ace9e3675c1bffd91ee5 Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 SRPM rhc-0.2.1-13.el9_0.src.rpm SHA-256: 4fb253caf8dc4c7ce55d7ec79847c98fed405fdce65a600cf9a258105653bfc5 x86_64 rhc-0.2.1-13.el9_0.x86_64.rpm SHA-256: 5e84b57e08eb17281f813105ca60ca0836c125060d334c6404acdb03ffffcbf6 Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.0 SRPM rhc-0.2.1-13.el9_0.src.rpm SHA-256: 4fb253caf8dc4c7ce55d7ec79847c98fed405fdce65a600cf9a258105653bfc5 aarch64 rhc-0.2.1-13.el9_0.aarch64.rpm SHA-256: 0fb3332f4e4f727e1904d2a1a16e63dee0639f533a30c7f40eb877de3c672e28 Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.0 SRPM rhc-0.2.1-13.el9_0.src.rpm SHA-256: 4fb253caf8dc4c7ce55d7ec79847c98fed405fdce65a600cf9a258105653bfc5 s390x rhc-0.2.1-13.el9_0.s390x.rpm SHA-256: 9d13d1ffbb7d64b2aeb6e8e311a69d164e14e4cd24eaf36c91ae6cf22cf7e870 The Red Hat security contact is secalert@redhat.com . More contact details at https://access.redhat.com/security/team/contact/ .